The invention discloses a placing device for assembly and disassembly of a transformer substation electric meter, which belongs to the technical field of electric meter assembly and disassembly. The placing device structurally comprises a base, rollers, a tank body, a tank body rotation driving mechanism, a new electric meter placing rack, a new electric meter placing rack lifting driving mechanism, a new electric meter support frame, an old electric meter placing tube and a cylinder. A rotation ring is provided at the bottom of the tank body, the tank body rotation driving mechanism is provided between the rotation ring and the base, an interlayer is provided at the middle of the tank body, the new electric meter placing rack is provided at one end of the interlayer, the old electric meter placing tube is provided at the other end of the interlayer, the new electric meter placing rack is connected to the new electric meter placing rack lifting driving mechanism, a plurality of new electric meter support frames are provided at the inner side of the new electric meter placing rack, the cylinder is provided at the bottom of the old electric meter placing tube, chutes are respectively provided on the front and rear side walls of the new electric meter placing rack, sliding blocks are provided at two sides of the new electric meter support frame, balls are provided on the sliding blocks, and the sliding blocks are provided in the chutes and the balls roll in the chutes. The invention has the characteristics of facilitating installation of the electric meter in a transformer substation.